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module Rack
module Auth
module Digest
class Params < Hash
def self.parse(str)
split_header_value(str).inject(new) do |header, param|
k, v = param.split('=', 2)
header[k] = dequote(v)
header
end
end
def self.dequote(str) # From WEBrick::HTTPUtils
ret = (/\A"(.*)"\Z/ =~ str) ? $1 : str.dup
ret.gsub!(/\\(.)/, "\\1")
ret
end
def self.split_header_value(str)
str.scan( /(\w+\=(?:"[^\"]+"|[^,]+))/n ).collect{ |v| v[0] }
end
def initialize
super
yield self if block_given?
end
def [](k)
super k.to_s
end
def []=(k, v)
super k.to_s, v.to_s
end
UNQUOTED = ['qop', 'nc', 'stale']
def to_s
inject([]) do |parts, (k, v)|
parts << "#{k}=" + (UNQUOTED.include?(k) ? v.to_s : quote(v))
parts
end.join(', ')
end
def quote(str) # From WEBrick::HTTPUtils
'"' << str.gsub(/[\\\"]/o, "\\\1") << '"'
end
end
end
end
end
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